Sharon Garson / Company details non existent

I recently joined yourprofitgateway.com / precision web tools.com and have realised that they cannot do anything for me so I would like to close the account. They have also taken a large amount of money out of my account despite saying that you had a month before they did so I have tried to cancel on [protected]@precisionwebtools.com but this site does not exist. How do I stop these scamsters from taking any more money